Paper-bag machine.



T. J. SHBRRARD.`

PAPER BAG MACHINE. APPLIOATION HLBD 11212.29, 1911.

1,053,655, Patented Feb. 18,1913.

2 SHEETS-SHEET 2.

INVENTOR 47m. wang, 05111111110, mm 9u @1 gm gg:

' matter or THOMAS J. SHERRARD, 0F WELIJSBURG,

SHERRARD PAPER C0., 0F WELLSBUBG, WEST VIRGINIA,

WEST VIRGINIA.

WEST VIRGINIA, ASSIGNOR T0 GEORGE 8c A CORPORATION OF PAPER-BAG MACHINE.

Specification of Letters Patent.

Patented Feb. 18, 1913.

Application led April 29, 1911. Serial No. 624,182.

To all whom, it may concern Beit known that I, THOMAS J. Sanna-ino, ofWellsburg, Brooke county, West Virginia, have invented a new and usefulPaper-Bag Machine, of which the fcllowing is a full, clear, and exactdescription, reference being had to the accompanylng drawings, forming apart of this specification, in whichn Figure 1 is a plan view of aportion of machine embodying my invention, certain of the parts beingbroken away or removed; Fig. 2' is a plan view showing the folders; Fig.3 is a longitudinal section of the machine, with certain parts removedbut showing the parts essential to the understanding of the invention;Fig. tis a plan view showing a holding-down shoe; and Fig. 5 is alongitudinal section of Fig. 4.

My invention has relation to machines for forming paper bags, of thattype in which the paper stock is irst formed into an openended tube, andis cut into proper lengths, the bottoms of the bags being subsequentlyformed from one end portion of the tubes.

My invention is especially applicable as an improvement upon the machineknown as the Smith-Winchester tuber, whicht is employed for thispurpose. The Smith-Winchester machines, however, are adapted to producea paper tube in which the paper is folded to substantially the sameextent from opposite sides to form a central seam, which seam extendsthrough the middle of the back portionof the completed bags.

vto the shoe 9, and which is adjustably se- The presence of this seam atthis point is objectionable for a number of reasons. It 1s frequentlydesired to place printed matter, or a printed design, upon the back ofthe bag, and the appearance of such printed design is greatly marred bythe presence of the seam extending therethrough, and the seam alsoincreases the difficulty of making a good impression. The seam alsofrequently causes an impress upon the front side of the bag, which marsthe printed matter or design printed thereon. My invention is designedto provide a machine of this general character, wit

means whereby instead of folding the paper equally from both sides, thevfold is made substantiallyl all from one side, thereby forming an edgeinstead of a center seam,

this seam coming at one edge of the completed bags, thereby obviatingthe obJections :curved shoes ranged side by side, being carried by a ljusting means,

above referred to, and also facilitating the` subsequent bottom-formingoperations.

In the accompanyingdrawings, the numeral 2 designates the frame of themachine, having at one end suitable. supporting means for t-he roll 3 ofpaper, from which the tube is formed. This paper is led upwardly over 4and 5, thence to the guide rollers 6 and 7, adjacent to which the pasteof other gumming material is applied by any suitable means (forming nopartof my present invention, and which is not shown); and thenceforwardly and downwardly underneat-h the rotating cutter 8, which formsthe usual cuts in the paper (which provide notches at the mouths of thecompleted bags for convenience in'opening). The paper then passesforwardly underneath the 9, 10 and 11, which are artransverse shaft 12,and having suitable adsuch as indicated at 13. These shoes guide thepaper onto the upper surface of the table 14, the side shoes 9 and 11being relatively narrow, while the central shoe 10 is much wider, andserves to more effectively hold the paper against buckling in thesubsequent folding operations. This shoe-10 can be removed to permit ofthe use of shoes of different widths to slut different sizes of bags. acorresponding adustment being made of the, side shoes 9 an 11.

15 is an edge guide for thepaper adjacent cured to the frame of themachine as indicated at 16.

17 designates an adjustable folder having a dared mouth, which engageson one side of the sheet along one edge of the paper and folds it overto make the narrow edge fold A. 18 is a similar folder at the oppositeside of the table, which engages the same face of the sheet of paperadjacent to the center thereof and which makes the wide fold B, thisfold being sufficiently wide to overlap the narrow fold A to which it ispasted or gummed to form the seam.

19 is a finishing folder and presser, which presses the lower inner edgeof the fold B onto the fold A. 20 is a folder and guide placed inadvance of the folder 18, and which insures the proper completion of thefold B.

and under the guide rollers.

loo

21 is a transversely extending tension and hold-down roller which bearsu on the upper surface of the tube after tlib latter has passed thefolders 19 and 20, and which is provided with suitable tension screwsand springs 22.

23 designates a pair of feed-in rolls; 24

a pair of cut-off rolls, one of which carries the cutter 25; 26designates a pair of corrugating rolls, and 27 a pair of feed-out rolls.

The roller 21, together with the rollers 26 and 27, are provided withcut-away portions 28, which prevent injury to the finished seam.

In the drawings, I have not shown all of the gearing for actuating theseveral sets of rolls, since this gearing is essentially the same as inthe Smith-Winchester machine above referred to, and which is vwell knownin the art. My invention provides machines of this type with improvedpaper guiding and folding means, which is so located and arranged as toform a side seam instead of a center seam. Heretofore, this has not beenconsidered practicable, owing to difH- culties in handling and inproperly folding the paper. My invention overcomes the eX- istingdiiiculties, and provides a machine by which a paper tubing with a sideseam can be readilv and accurately made.

What I claim is .1. In a machine for forming tubes for use in bagmanufacture, a folder arranged to engage one face of the sheet along oneedge thereof to form. a 'narrow edge fold, a second folder in advance ofthe first folder to engage 'one face of the sheet along the oppositeedge of said sheet to form a wide fold overlapping the narrow fold, andfixed shoes in back of the first folder arranged to engage the oppositeface of the sheet from that engaged by the folders to prevent bucklingof the paper; substantially as described. v

2. In a machine of the character described, the combination with foldersarranged to form a narrow fold at one edge of the paper sheet, and awide fold at the opposite edge of the sheet, of paper holding andantibuckling means for engaging the sheet at one side of thelongitudinal center thereof as it passes to the folders, comprisingrelatively narrow edge shoes and a relatively wide intermediate shoe;substantially as. described.

3. In a machine fo-r forming tubes for use in bag manufacture, a folderarranged to engage one edge of the paper sheet to form a narrow edgefold, a second folder in adi vance of the first folder to engage theopposite edge of the sheet and to form a wide fold overlapping thenarrow fold, and fixed shoes in back of the first folder arranged toengage the paper at one side of the longitudinal center thereof topermit the other side to be folded over as it slides under the slices inits passage to the folder, said shoes, being arranged to preventbuckling, together with an edge guide adjacent to the fixed shoesengaging the paper in back o-f the firstfolder; substantially asdescribed.

4. In a machine for forming paper tubes for use in bag manufacture, afolder having a flared mouth arranged to engage one face of the sheetalong one edge thereof to turn the sheet upon itself to forni a narrowedge fold, a second folder in advance of the first folder having aflared mouth to engage the same face of the sheet along the oppositeedge of said sheet to turn the sheet upon itself to form a Wide foldoverlapping the narrow fold, and fixed shoes in back of the first foldarranged to engage the sheet on the face opposite t-he face engagedbythe folders to prevent buckling of the paper; substantially asdescribed.

In testimony whereof I have hereunto set my hand.

* T. J. SHER-RARD. Witnesses:

WILLIAM A. WAssoN, M. E. BOWMAN.

